CA · C-20 · Mechanical
Warm-Air Heating, Ventilating and Air-Conditioning
Heating, ventilation, refrigeration and air-conditioning systems.
What you get
Built specifically for the C-20 exam.
- Complete course curriculum tailored to this exam
- C-20-specific practice question bank (in active development — grows weekly)
- Unlimited timed & study-mode practice exams
- 24/7 AI Tutor grounded in this classification's reference materials
- Spaced-repetition flashcards for every topic
- Personalized study plan with Pass Probability™ tracking
- Missed-question vault until every topic is mastered
- California Pass Guarantee — pass or your money back
Full Access
$399
One-time payment. Lifetime access to the C-20 prep platform — including future updates and new question additions.
Continue to checkoutYou'll select Warm-Air Heating, Ventilating and Air-Conditioning as your active license right after sign-up.
FAQ
California C-20 Warm-Air Heating, Ventilating and Air-Conditioning — common questions
What does a California C-20 license allow you to do?
Heating, ventilation, refrigeration and air-conditioning systems. It's issued by the California Contractors State License Board (CSLB) under the Mechanical category.
How do I prepare for the C-20 exam?
Study the CSLB C-20 exam outline, take timed practice exams that mirror the blueprint, drill flashcards on weak topics, and use an AI tutor for anything unclear. Our platform delivers all of it in one place for C-20.
How much does C-20 exam prep cost?
$399 one-time for lifetime access — full course, AI tutor, unlimited practice exams, flashcards, and the California Pass Guarantee.
Is the C-20 content California-specific?
Yes. Every question, lesson, and flashcard is mapped to the current CSLB C-20 exam blueprint and California Business & Professions Code.